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Article 12

 

Suggested Generic Cat 5 Specification


SPECIFICATION

HIGH SPEED LAN COMMUNICATIONS
PLENUM CABLE

ENHANCED PERFORMANCE CATEGORY 5
WITH LIMITED-COMBUSTIBLE WIRE INSULATION

HORIZONTAL UNSHIELDED TWISTED
FOUR PAIR (UTP)

TABLE OF CONTENTS

Section Subject
1.0 Engineering Drawing and Abstract
2.0 Scope
3.0 Physical
3.1
Conductor
3.2
Conductor Insulation
3.3
Pair Assembly
3.4
Outer Jacket
3.5
Color Codes
3.6
Cable Marking
4.0 Mechanical
4.1
Conductor Elongation
4.2
Cable Breaking Strength
4.3
Cable Bend Radius
5.0 Life Safety
5.1
National Electrical Code
6.0 Transmission
6.1
DC Resistance
6.2
DC Resistance Unbalance
6.3
Mutual Capacitance
6.4
Capacitance Unbalance: Pair to Ground
6.5
Characteristic Impedance & Structural Return Loss (SRL)
7.0 Reference Documentation
8.0 Cable Documentation
8.1
Manufacturers' Part Numbers

1.0 Engineering Drawing and Abstract

ENGINEERING SPECIFICATIONS
Characteristic impedance
100 W ±15% from 1 to 155MHz.
ACR
15 at 100 MHz, 10 at 155 MHz.
Propagation delay
5.7 ns/m at 100 MHz, max.
Delay skew
48 ns at 100 m, max.

CABLE CONSTRUCTION
Conductor 24 AWG solid annealed copper
Primary lnsulation FEP fluoropolymer resin on each pair
Jacket Thermoplastic. Must meet all requirements for the expected life of the cable



2.0 Scope

This specification defines the requirements for commercially available high performance Category 5 plenum - rated LAN communications cable. The cable design described herein exceeds minimum ANSI / TIA / EIA 568A Category 5 and ISO / IEC 11801 Class D standards in critical transmission characteristics and provides additional specifications for conductor insulation. This specification provides more ACR margin (headroom) at transmission frequencies up to 155 MHz, better electrical balance and temperature / humidity stability for superior long term performance. In addition, this specification calls for a limited - combustible* wire insulation that meets the fire safety stipulation of the NFPA 90A Standard requiring limited - combustible materials in products for use in building plenums.

3.0 Physical

In addition to the applicable requirements of ANSI / ICEA S-80-661 and UL 444, the physical design of the cable shall meet sections 3.1 to 3.6 inclusive.

3.1 Conductor

Conductor shall be 24 AWG solid bare copper and shall conform to the applicable requirements of ANSI / ICEA S-80-661. Minimum dimensions and maximum strand length shall be in accordance with UL 444. Conductor shall also conform to solid annealed copper wire in accordance with ASTM B 3. The section "Dimensions and Permissible Variations" of ASTM B 3 shall be waived.


3.2 Conductor Insulation

Each copper conductor shall be insulated 100% with fluorinated ethylene propylene (FEP) polymer.


3.3 Pair Assembly

Cable shall consist of 4 insulated conductor pairs. The pair twist length shall be selected by the manufacturer to assure compliance with the transmission requirements of section 6.0.


3.4 Outer Jacket

The core, consisting of 4 insulated conductor pairs, shall be protected with an overall thermoplastic covering generally referred to as an "outer jacket." The jacketing material selected by the manufacturer must meet and maintain the physical, mechanical and electrical requirements of ASTM D 4565 and this specification for the expected life of the cable.


3.5 Color Codes

The color code shall be as shown in Table 3.5.


3.6 Cable Marking and Identification


The cable jacket shall be legibly marked at least every 24 in. by surface printing. The following information shall be provided:

    • Manufacturer's Identification
    • Type of Cable Construction
    • UL or ETL Verification
    • CMP Identification Code
    • Cable Footage Marker


4.0 Mechanical

4.1 Conductor Elongation

Minimum elongation of conductors from a finished cable shall be in accordance with ICEA S-90-661.

4.2 Cable Breaking Strength

Finished cable shall have a minimum breaking strength of 400 N (90 lbf) measured in accordance with ASTM D 4565.

4.3 Cable Bend Radius

Finished cable shall withstand a bend radius of 25.4 mm (1 in.) at a temperature of -20°C±1°C without jacket or insulation cracking when tested in accordance with ASTM D 4565.


5.0 Fire Performance

5.1 National Electrical Code--NFPA 70A

The finished cable shall be plenum - rated in accordance with the requirements of National Electrical Code NEC Article 800, UL 444, NFPA 262 (UL 910) and applicable CSA standards.


5.2 Potential Heat Requirement for Limited - Combustible Materials

The insulation material used on the wire pairs in the cable shall conform with the requirement of the NFPA 90A Standard that limited - combustible materials* be used in products installed in building plenums. Limited combustible is measured according to NFPA 259 utilizing the maximum limits for potential heat of 3,500 Btu/lb (8.141 mJ/kg) per NFPA 90A.


6.0 Transmission

Transmission requirements shall conform to all applicable sections of ANSI / TIA / EIA 568A Category 5 and ISO / IEC 11801 Class D except where exceeded by the requirements of sections 6.1 to 6.7, inclusive.

6.1 Capacitance Unbalance: Pair to Ground

The capacitance unbalance to ground at 1 kHz of any pair, measured in accordance with ASTM D 4566, shall not exceed 200 pF per 100 m (328 ft.) at or corrected to a temperature of 20°C.


6.2 Characteristic Impedance and Structural Return Loss (SRL)

Finished cable shall have a characteristic impedance of 100 ohms ±15% in the frequency range from 1 MHz to 155 MHz when measured in accordance with ASTM D 4566 Method 3. The SRL shall be greater than or equal to the values given in Table 6.2 for all frequencies from 1 MHz to 155 MHz for a length of 100 m (328 ft.) or longer.


Table 6.2
Horizontal UTP Cable SRL
(Worst Pair)
Frequency (f), MHz
dB

0.772-10
23
10-16
23
16-20
23
20-155
23-10 log(f/20)

6.3 Attenuation

The attenuation of any pair shall meet the requirements of Table 6.3.
The maximum attenuation at elevated temperatures of 40°C and 60°C shall be verified using a factor of 0.4% increase per °C. Attenuation measurements shall be in accordance with ASTM D 4566

Table 6.3
Horizontal UTP Cable ACR
(Worst Pair)
Freq., MHz
Attenuation, Max.
NEXT, Min.*
ACR*

0.772
1.8
70
68
1.00
2.0
68
66
4.00
4.1
59
55
8.00
5.8
54
48
10.00
6.5
53
46
16.00
8.2
50
42
20.00
9.3
48
39
25.00
10.4
47
37
31.25
11.7
45
33
62.50
17.0
41
24
100.00
22.0
38
16
155.00
27.0
37
10
* Rounded to nearest dB.

6.4 Near End Cross Talk (NEXT) Loss

The NEXT loss shall meet the requirements of Table 6.3. NEXT measurement shall be in accordance with ASTM D 4566.


6.5 Attenuation to Cross Talk Radio (ACR)

ACR shall meet the requirements of Table 6.3.


6.6 Propagation Delay

The propagation delay of any pair at 100 Mhz shall not exceed 5.7 ns/m.


6.7 Propagation Delay Skew

The maximum phase delay skew between the fastest and slowest pair shall not exceed 18 ns at 100 m when measured in accordance with ASTM D 4566 at -20°C to 60°C.


7.0 Reference Documentation

Copies of referenced standards may be obtained from the following sources:

American National Standards Institute (ANSI)
11 W 42nd St.
13th Floor
New York, NY 10036
Tel. (212) 642-4900
ISO / IEC 11801
Generic Cabling for Customer Premises

American Society for Testing and Materials (ASTM)
100 Barr Harbor Drive
West Conshohocken, PA 19428-2959
ASTM B 3-90
Soft or Annealed Copper Wire
ASTM 4565
Cold Bend Test
ASTM D 4566-94
Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire & Cable
ASTM 4565
Physical and Environmental Properties of Insulation and Jackets for Telecommunications Wire & Cable

Insulated Cable Engineers Association
P.O. Box 440
South Yarmouth, MA
ANSI / ICEA S-90-661-1994

Communications Wire and Cable for Wiring Premises
National Fire Protection Association (NFPA)
Batterymarch Park
Quincey, MA 02269
ANSI / NFPA 70-1996
National Electrical Code (NEC)
NFPA 90A


Standard for the Installation of Air Conditioning and Ventilating Systems - 1996 Edition
Telecommunications Industries Association (TIA)
2500 Wilson Blvd., Suite 300
Arlington, VA
Tel. (703) 907-7700
Fax (703) 907-7727
ANSI / TIA / EIA 568A
Commercial Building Telecommunications Cabling Standard

Underwriters Laboratories, Inc.
333 Pfingsten Road
Northbrook, IL 60062
UL 910
Fire Safety Test
UL 444
Standard for Communications Cable

8.0 Cable Documentation

8.1

Cable Manufacturers' Part Numbers:

Belden
P.O. Box 1980
Richmond, IN 47875
Tel. (317) 983-5200

Datatwist® 350
Part # SQ1701A
Berk-Tek
132 White Oak Rd.
New Holland, PA
Tel. (800)-BERKTEK (237-5835)

LANmark®-350
Part# 230600
Champlain Cable
12 Hercules Dr.
Colchester, VT. 05446
Tel. (800) 451-5162

Dataclear® EF Gold
Essex Group, Inc.
Engineered Products Division
1510 Wall St.
P.O. Box 1510
Fort Wayne, IN 46801-1510
Tel. (800) 551-8948
Fax (219) 461-5661

427 Cobra
General Cable
Data/Electronic Products
4 Tesseneer Dr.
Highland Heights, KY 41076-9753
Tel. (800) 424-5666
Fax (800) 547-8249

DreamLAN 5
Helix/HiTemp Cables, Inc.
20 Forge Park
Franklin, MA 02038
Tel. (508) 541-7700
Fax (508) 541-8122

SuperCat-360
Part# 804508
Mohawk/CDT
9 Mohawk Dr.
Leominster, MA 01453
Tel. (800) 422-9961
Fax (508) 537-4358

MegaLAN 400
Part #M55988
Prestolite Wire Corp.
1 Greenwood Dr.
P.O. Box 259
Sidney, NE 69162
Tel. (308) 254-5310
NETLink 2000
Part # EFP-424BWT02

 

  Friday, July 18, 2003
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